JP3763824B2 - Electric chain gate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric chain gate installed at an entrance of a parking lot or a plaza.
[0002]
[Prior art]
Conventionally, as this kind of electric chain gate, two gate pillars are installed at a predetermined distance through which a vehicle can pass, and a chain such as a link chain or a wire or rope is similar between the two gate pillars. (Hereinafter, these are generically referred to as chains) are routed at a height that can prevent the vehicle from passing, and at least one of the gate pillars moves the chains up and down so that only specific vehicles such as contract vehicles can pass. This is generally well known.
[0003]
Various mechanisms for moving the chains up and down have been proposed and put to practical use. As an example, in Patent Document 1, a drive unit such as an electric motor or a speed reducer is provided in the upper part of the gate pole, and a chain, a belt, or the like is suspended on a rotating body such as a sprocket or a pulley that is rotated by the drive unit. A device is disclosed in which a lowering member is wound and a hook member connected to one end of a chain is connected and supported in a suspended state. Also, a screw shaft that is rotationally driven by the drive unit is erected in the gate pole, and a lifting member with a nut that moves up and down along the screw shaft is mounted, and a hook that is connected to one end of the chain is attached to the lifting member What connected the member is also indicated.
[0004]
[Patent Document 1]
Japanese Patent No. 2965250 (all pages, all figures)
[0005]
[Problems to be solved by the invention]
However, in the above-mentioned conventional one, since the drive part is attached to the casing of the gate pole or the frame material inside thereof by bolting or the like, vibration and noise generated in the drive part are easily transmitted to the casing of the gate pole. There was a problem that it was amplified by and diffused as a loud noise. Further, when a chain is used as the hanging member or a guide roller is used to guide the vertical movement of the hook member or the lifting member, these operating sounds contribute to noise.
[0006]
The present invention has been made in view of the above points, and an object of the present invention is to provide an electric chain gate that can effectively reduce noise by improving a mounting structure of a drive unit in a gate pole. It is to be provided.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, the invention according to claim 1 is an electric chain gate in which a chain prevents passage of a vehicle between two gate pillars installed at a predetermined distance through which the vehicle can pass. A hook member connected to one end of a chain or the like is supported in a suspended state by at least one of the two gate pillars and suspended by a suspension member, and is moved up and down by the operation of an electric motor. It is assumed that it is provided. And the said electric motor is unitized with accessories, such as a reduction gear, and it is set as the structure which attaches this motor unit to the support stand fixed to the upper part in a gate pillar substantially horizontally via several anti-vibration rubber | gum.
[0008]
In this configuration, a drive unit such as an electric motor or a speed reducer is unitized as a motor unit, and this motor unit is attached to a support base fixed to the upper part of the gate pole via a plurality of vibration isolating rubbers. The vibration generated by the unit is absorbed by the anti-vibration rubber, and the noise generated by the motor unit is less likely to be transmitted compared to when the motor unit is mounted directly on the casing of the gate pole. Effectively prevented.
[0009]
According to a second aspect of the present invention, in the electric chain gate according to the first aspect, the suspension member is provided with a driving-side toothed pulley provided in the motor unit and a driven-side toothed lower portion provided in the lower part of the portal post. A toothed belt wound around a pulley is used, and the hook member is connected to a part of the toothed belt. In this configuration, a toothed belt with relatively little operating noise is used as the suspension member, which can contribute to noise reduction.
[0010]
According to a third aspect of the present invention, in the electric chain gate according to the second aspect, a guide member for guiding the vertical movement of the hook member is provided between the toothed belt and the hook member. It has a fitting portion that is slidably fitted to a guide rod erected between the support base and the base plate substrate, and guides the vertical movement of the hook member along the guide rod. In this configuration, when the guide member guides the vertical movement of the hook member, the guide member merely slides along the guide rod while the fitting portion is fitted to the guide rod. The operating noise is lower than when guiding using rollers.
[0011]
According to a fourth aspect of the present invention, in the electric chain gate according to the second or third aspect, the motor unit is provided with a roller for preventing tooth skipping of the toothed belt at the driving-side toothed pulley. With this configuration, the roller on the motor unit can keep the toothed belt tension low while preventing tooth skipping of the toothed belt at the drive side toothed pulley, and the operating noise and noise can be reduced accordingly. Can contribute.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an electric chain gate A according to an embodiment of the present invention. The chain gate A is composed of two (only one is shown) gate pillars installed at a predetermined distance through which a vehicle can pass. 1 and a link chain 2 as a chain that spans between the two gate pillars 1 at a height that can prevent the passage of the vehicle. The two gate pillars 1 have the same basic configuration, and in the following description, one of the gate pillars 1 illustrated will be described.
[0013]
That is, as shown in FIGS. 2 to 4, the gate pole 1 includes a concrete base block 3, a substantially rectangular metal substrate 4 fixed to the upper surface of the base block 3, and the substrate 4. It is provided with a hollow casing 5 that is vertically provided on the top and that has a flat cross-sectional shape with a flat portion on one side surface. The casing 5 includes a lower case 6 as a strength member, a trolley cover 7 having a substantially arc-shaped cross section that constitutes the side surface of the lower case 6 on the link chain 2, and upper ends of the lower case 6 and the trolley cover 7 above them. And an upper case 8 joined so as to cover. The trolley cover 7 is formed with a slit 10 that penetrates the hook member 9 connected to one end of the link chain 2 over substantially the entire length in the vertical direction, and prevents dust and the like from entering the slit 10. A pair of dust seals 11 and 11 are fixed to a joint surface with the lower case 6 via a dust cover 12 and a dust seal holder 13, respectively.
[0014]
A substantially horizontal flat plate-like support base 16 is provided at the upper part of the casing 5 with its periphery fixed to the upper end of the lower case 6 by welding, and the motor unit 20 is mounted on the support base 16. Is placed. As shown in detail in FIGS. 5 to 8, the motor unit 20 includes an electric motor 21, a speed reducer 22 that reduces the rotational speed of the output shaft 21 a of the electric motor 21 and transmits it to the output shaft 22 a side, A drive-side toothed pulley 23 attached to the output shaft 22a of the speed reducer 22, a brake device 24 for braking the rotation of the electric motor 21, and other accessories are unitized. This motor unit 20 Is attached to the support 16 via three anti-vibration rubbers 26, 26, 26. As shown in FIG. 9, each anti-vibration rubber 26 is interposed between a plate 26a bolted to the lower surface of the motor unit 20 and a plate 26b with an external thread that passes through the support base 16 and is fixed with a nut. The rubber 26c is filled and bonded with a predetermined thickness. A control panel 27 is attached to the upper surface of the motor unit 20, and the motor unit 20 and the control panel 27 are covered with the upper case 8.
[0015]
A toothed belt 31 as a suspension member is wound between a driving-side toothed pulley 23 of the motor unit 20 and a driven-side toothed pulley 30 provided on the substrate 4. Are arranged from the upper part to the lower part in the casing 5 through the opening 32 provided in the support base 16. The toothed belt 31 is provided with a belt tensioner 33 for adjusting the tension thereof, and in the vicinity of the driving side toothed pulley 23 of the motor unit 20, as shown in FIGS. 5 and 6, the pulley 23. A roller 34 for preventing tooth skipping of the toothed belt 31 is rotatably mounted.
[0016]
A hook member 9 is connected to a part of the toothed belt 31 through a guide member 34. As shown in an enlarged detail in FIG. 10, the guide member 36 includes a cylindrical fitting portion 36a, a first connecting portion 36b fixed to one place on the outer peripheral surface of the fitting portion 36a, A first connecting portion 36b, a second connecting portion 36c fixed to the opposite side of the outer peripheral surface of the fitting portion 36a, and an angle-shaped guided portion 36d connected to the tip of the second connecting portion 36c. Thus, one end of the hook member 9 is connected to the first connecting portion 36 b by a fastening bolt 37. A fitting portion 36a of the guide member 36 is slidably fitted to a guide rod 38 provided between the support base 16 and the substrate 4, and a second coupling portion 36c of the guide member 36 is As shown in FIG. 4, a part of the toothed belt 31 is sandwiched between the fixed member 39 and the fixed member 39. When the drive-side toothed pulley 23 is rotated in the forward rotation direction or the reverse rotation direction by the operation of the motor unit 20 (specifically, the electric motor 21), the guide member 36 or the hook member 9 is suspended by the toothed belt 31. The guide member 36 not only functions to connect the hook member 9 to the toothed belt 31 but also guides the vertical movement of the hook member 9 along the guide rod 38. It also has functions.
[0017]
Corresponding to the guided portion 36d of the guide member 36, an angle-shaped hook guide 40 is erected in parallel with the guide rod 38 between the support base 16 and the substrate 4, and the hook guide 40 is a guide. The rotation of the guide member 36 around the guide rod 38 is restricted in cooperation with the guided portion 36d of the member 36. 1 to 3, 51 and 52 are nightlights and warning lights provided in the upper case 8, respectively, and 53 is provided in the casing 5 together with a joint between the lower case 6 and the trolley cover 7. The mounting bracket 54 is provided with a photoelectric switch 54 for detecting the passage of the vehicle.
[0018]
Next, the operation and effect of the electric chain gate A will be described. When the electric motor 21 is operated, the rotational force in the forward rotation direction or the reverse rotation direction is transmitted to the drive-side toothed pulley 23 via the speed reducer 22. When the pulley 23 is rotated, the hook member 9 is supported by the toothed belt 31 in a suspended state, and moves up or down under the guide of the guide member 36 and the guide rod 38, whereby the ring chain 2 is moved. Ascend to close the gate or descend to open the gate.
[0019]
In this case, the electric motor 21 is unitized as a motor unit 20 together with accessories such as a speed reducer 22, and the motor unit 20 is mounted on a support base 16 fixed substantially horizontally in the casing 5 of the gate pole 1. On the other hand, it is attached via three anti-vibration rubbers 26, 26, 26. For this reason, vibrations generated by the entire drive unit such as the electric motor 21 and the speed reducer 22, that is, the motor unit 20 are absorbed by the anti-vibration rubber 26, and noise generated by the motor unit 20 is also directly applied to the casing of the gate pole 1. Since it becomes difficult to transmit compared with the case where it attaches to 5, etc., generation | occurrence | production of the big noise by the amplification effect | action of the casing 5 can be prevented effectively, and reduction of a noise can be aimed at.
[0020]
Moreover, since the toothed belt 31 with relatively little operating noise is used as the hanging member that moves the hook member 9 up and down in a suspended state, noise can be further reduced. Further, the guide member 36 that guides the vertical movement of the hook member 9 slides along the guide rod 38 while the fitting portion 36a is fitted to the guide rod 38, and therefore a guide roller is used. Therefore, the operating noise can be reduced as compared with the case of guiding and the noise can be further reduced.
[0021]
Further, since the motor unit 20 is provided with a roller 34 for preventing tooth skipping of the toothed belt 31 at the driving-side toothed pulley 23, the roller 34 is provided with teeth on the driving-side toothed pulley 23. While preventing tooth skipping of the belt 31, the tension of the toothed belt 31 can be kept low by the belt tensioner 33, and noise can be further reduced.
[0022]
In addition, this invention is not limited to the said embodiment, Other various embodiment is included. For example, in the above-described embodiment, the case where the hook member 9 connected to the link chain 2 is moved up and down by each of the two gate pillars 1 has been described. However, the present invention is not limited to one of the two gate pillars. The present invention can be similarly applied to the case where the frame is moved up and down, or when another chain, a wire, a rope, or the like is used instead of the link chain 2.
[0023]
In the above embodiment, the peripheral edge of the support base 16 is fixed to the upper end portion of the lower case 6 by welding to fix the support base 16 substantially horizontally on the upper part in the gate pillar 1. In the case of the type in which the frame material is provided inside the casing, it is needless to say that the periphery of the support base 16 may be fixed to the frame material by welding or the like.
[0024]
【The invention's effect】
As described above, according to the electric chain gate of the present invention, the electric motor is unitized with accessories such as a speed reducer, and a plurality of vibration isolating rubbers are attached to the support base fixed to the upper part of the gate pole. Therefore, it is difficult for vibration and noise generated in the motor unit to be transmitted to the casing of the gate pole, and it is possible to effectively prevent generation of large noise due to the amplification action of the casing, and to reduce noise. Can do.
[0025]
In particular, in the invention according to claim 2, the suspension member that moves up and down by the operation of the electric motor while supporting the hook member connected to one end of the chains in a suspended state is provided with teeth with relatively little operating noise. Since the belt is used, noise can be further reduced.
[0026]
In the invention according to claim 3, the guide member that guides the vertical movement of the hook member slides along the guide rod while the fitting portion is fitted to the guide rod. The operating noise can be reduced as compared with the case of guiding using a roller, and the noise can be further reduced.
[0027]
Furthermore, in the invention according to claim 4, the tension of the toothed belt can be kept low while preventing the toothed belt from skipping in the driving side toothed pulley by the roller provided in the motor unit. Reduction can be further achieved.
[Brief description of the drawings]
FIG. 1 is a side view showing an installation state of an electric chain gate according to an embodiment of the present invention.
FIG. 2 is a longitudinal side view of a gate pillar of the chain gate.
FIG. 3 is an exploded perspective view of the same.
4 is an enlarged cross-sectional view taken along line XX in FIG.
FIG. 5 is a perspective view of a motor unit.
6 is an arrow view seen from the Y direction of FIG. 5. FIG.
7 is an arrow view seen from the Z direction in FIG. 5;
FIG. 8 is a cross-sectional view showing the internal configuration of the motor unit.
FIG. 9 is a longitudinal sectional view of a vibration-proof rubber.
FIG. 10 is a perspective view of a guide member and a hook member.
[Explanation of symbols]
A Electric chain gate 1 Gate pillar 2 Link chain (chains)
4 Substrate 9 Hook member 16 Support base 20 Motor unit 21 Electric motor 22 Reducer 23 Drive side toothed pulley 26 Anti-vibration rubber 30 Driven side toothed pulley 31 Toothed belt (hanging member)
34 Roller 36 Guide member 36a Fitting portion 38 Guide rod

Claims (4)

Chains are spanned between two gate pillars installed at a predetermined distance through which the vehicle can pass, at a height that can prevent the vehicle from passing, and at least one of the two gate pillars, In the electric chain gate in which the hook member connected to one end of the chain is supported in a suspended state by the suspension member and is moved up and down by the operation of the electric motor,
The electric motor is unitized with accessories such as a speed reducer, and the motor unit is attached to a support base fixed substantially horizontally on the upper part of the gate pole via a plurality of vibration-proof rubbers. Electric chain gate characterized by The suspension member includes a toothed belt wound around a driving-side toothed pulley provided in the motor unit and a driven-side toothed pulley provided in a lower portion of the portal post, and the toothed belt. The electric chain gate according to claim 1, wherein the hook member is connected to a part of the electric chain gate. A guide member is provided between the toothed belt and the hook member to guide the vertical movement of the hook member. The electric chain gate according to claim 2, further comprising a fitting portion that is slidably fitted to guide the vertical movement of the hook member along the guide rod. The electric chain gate according to claim 2 or 3, wherein the motor unit is provided with a roller for preventing tooth skipping of the toothed belt at the driving side toothed pulley.

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